1. Basic info (including membership, which has significantly fallen in recent years) -- https://www.unionfacts.com/union/Retail,_Wholesale,_and_Depa... 2. Leaders and salaries (they seem to be well-paid) -- https://www.unionfacts.com/union/Retail,_Wholesale,_and_Depa... 3. Crime and corruption (are they more/less corrupt than an average union?) -- https://www.unionfacts.com/union/Retail,_Wholesale,_and_Depa...
... And so on.
If the data is incorrect, then there's reason to object to linking to the website. Is the data incorrect?
Is there a "pro-union" website that provides/aggregates the same data?